Device for supplying steam and air to furnaces.



e. R. JARMANi DEVICE FOR SUPPLYING STEAM AND AIR T0 FURNACES.

APPLICATION FILED FEB. 23. 1915.

1,186,201. Patented June 6,1916.

THE COLUMBIA PLANOGRAPH co., WASHINGTON, n. c

UNITED s'rA'rns PATENT oFnioE.

GEORGE R. JARMAN, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-FOURTH TO W.A. MATTHEWS, ONE-FOURTH T0 In A. MATTHEIVS, AND ONE-FOURTH TO T. R.MATTHEWS, ALL OF BALTIMORE, MARYLAND.

DEVICE FOR SUPPLYING STEAM AND AIR TO FURNACES.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed February 23, 1915. Serial No. 10,008.

T 0 all whom it may concern:

Be it known that I, GEORGE E. JARMAN, a citizen of the United States ofAmerica, and resident of Baltimore, in the State of Maryland, haveinvented certain new and useful Improvements in Devices for SupplyingSteam and Air to Furnaces, of which the following is a specification.

This invention relates to devices for feeding steam and air to furnacesfor the purpose of supporting combustion and insuring consumption offuel so as to acquire the maximum efficiency for a given quantity offuel.

An object of the present invention is to provide novel means forutilizing jets of steam so directed with respect to an air intake that apartial vacuum is created within the air intake and the said partialvacuum results in drawing increased volumes of air through the airintake so that it will be delivered under the grate bars and find itsway therethrough to the fire bed.

A further object of this invention is to produce a steam supplyingmedium so made as to deliver the steam to the air delivery pipe so thatit will have a whirling action and the force thereof will be equalpractically throughout the diameter of the air intake, thereby causingthe current of air in the said air intake to be uniform throughout itscross sectional area.

A still further object of this invention is to produce a steam supplyingmedium requiring a comparatively small volume of steam for moving agiven volume of air in the air intake, this due to the fact that thesaid steam is delivered in relatively small jets and tangentially to theaxis of the air intake.

WVith the foregoing and other objects in View, the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings forming part of this specification wherein likecharacters denote corresponding parts in the several views, and in whichFigure 1 illustrates a view in elevation of a furnace, the same beingbroken away to show the invention applied thereto; Fig. 2 illustrates anenlarged detail sectional View of anair intake and the invention appliedthereto.

In these drawings 10 denotes the wall or casing of a furnace with asteam and air feeding device 11 applied to each side thereof, it beingshown that the said air and steam feeding device is applied to the sidewall of one section and to the front door of the ash pit of the othersection.

In carrying out the invention, I utilize an air supply pipe 12 with aflared outer end 13, the said outer end being guarded by a damper 1% sothat openings through the outer end may be restricted or increasedaccording to the volume of air which is necessary for producing theintended results.

A steam supply pipe 15 leads through a bushing 16 on the flared portionof the intake pipe and through an aperture 17 in said flared portion,the said steam supply pipe having an extension 18 lying axially of theair supply pipe. The inner end of the extension 18 has a head 19apertured and threaded to receive the nipples 20 of the jets.

I claim In a device for feeding steam and air to furnaces, an air supplypipe having a flared extremity and a restricted portion, means forcontrolling the volume of air into said air supply pipe, a steam supplypipe having an extension lying axially of the air supply pipe andterminating at a point within the restricted portion thereof, aremovable circular head having a convexed portion positioned on one endof said steam supply pipe,

- said convexed portion of the head having a plurality of openingsdisposed at an angle with relation to the extension of the steam supplypipe, and removable nozzles positioned in the respective openings of theconvexed portion of said head.

In testimony whereof, I hereunto aflix my signature in the presence oftwo witnesses.

GEORGE R. JARMAN. Witnesses:

MARGARET I. Prnmnn, Lo'r'rm E. BARKLEY.

Copies of this patent may be obtained for five cent: each, by addressingthe Commissioner ot'latentu,

Washington, D. 0.

